The conventional DiagMC relies on the Matsubara formalism, but recently, a new algorithm was proposed to simplify the evaluation of diagrams [1]}, [2]}, [3]}. In particular, this development revolves around reducing the integration of diagrams in space-time to only space. Our method [1]} uses some basic definitions in graph theory, whereas the work of [2]}, [3]} is a direct application of residue theorem to each diagram. These methods reduce the calculation time and allow us to evaluate the grand potential or self-energy in the finite temperature of each order in MBPT.
